+- There have been some changes to the LyX command line. The following
+ new options have been added:
+
+ --export-to <format> <dest> (-E <format> <dest>)
+
+ Allows one to perform a batch export of the LyX file that is
+ opened to the specified destination file <dest> and format
+ <format>. For example, to create a PDF of a LyX document,
+ you can run:
+ lyx --export-to pdf /path/to/dest.pdf /path/to/source.lyx
+ See the manual page for details.
+
+ This functionality is also available via a new menu voice
+ Export->Export As..., that pops up a dialog allowing one to
+ choose the export format, as well as the destination pathname.
+ Also, it is available via the mini-buffer (or the -x switch)
+ through a proper new LFUN (see below).
+
+- The Advanced Find and Replace feature now supports cancel of a
+ long search operation by hitting the ESC key.
+
+- The format pdf aka "PDF (ps2pdf)" was split in two formats: pdf aka
+ "PDF (ps2pdf)" and pdf6 aka "PDF (graphics)". pdf6 is used for PDF
+ files included as graphics. Custom external templates and converters
+ might need to be adjusted. The format split was needed since otherwise
+ an odt->pdf converter which is intended for included graphics only
+ did interfere with document export via ps2pdf.
+
+- The support for ArmTeX (a special typesetting engine for Armenian)
+ was removed. Writing text in Armenian is now possible in a native
+ way using XeTeX.
+
+
+The following pref variables were added in 2.1:
+
+- \\close_buffer_with_last_view [yes|no|ask]
+ When the user closes the last view on a document, close the
+ document as well ("yes"), or hide the document ("no"), or ask
+ the user ("ask").
+
+- \\completion_minlength
+ Defines the minimal length of a word to be added to the list of
+ words for text completion.
+
+- \\default_length_unit
+ Defines the default length unit: 2 for centimers, 6 for inches.
+
+- \\default_otf_view_format
+ Defines the default output format for documents with non-tex
+ fonts (OpenType fonts).
+
+- \\texinputs_prefix
+ Defines the prefix for the TEXINPUTS environment variable. A
+ single '.' in the paths will get replaced with the current
+ document dir and also non-absolute paths will be prefixed with
+ that dir.
+
+ The default semantics of TEXINPUTS apply, such that, for example,
+ if a path is terminated with a double slash, all subdirectories
+ will also be searched by both the TeX engine and ancillary programs
+ such as dvi previewers or dvips.
+
+ (see also commit 1717ef20)
+
+- \\use_qimage
+ See Caveats section below.
+
+- \\use_system_theme_icons
+ If set to true, LyX tries to use the theme icons as defined by
+ the OS.
+
+
+The following pref variables were changed in 2.1:
+
+- \\mac_like_word_movement -> \\mac_like_cursor_movement
+ When this option is set, the cursor is now moved to the end of
+ the current paragraph on paragraph-down. The pref variable was
+ renamed to better reflect this new behaviour.
+
+
+The following pref variables are obsoleted in 2.1:
+
+- \\default_language and \\default_papersize
+ To set the default language and paper size for new documents, use
+ the "Save As Document Defaults" button in Document > Settings.